Oscillation suppression device and ship provided with the same
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsAkinori Hoshio, Katsuya Umemura, Hiroshi Takeuchi
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Abstract
An oscillation suppression device is provided for attenuating oscillation of an object to be controlled by a gyro torque of a control moment gyro having a flywheel rotating at a high speed. The oscillation suppression device includes an angular velocity detector for detecting an oscillation angular velocity of the object to be controlled. A control unit is connected to a gimbal shaft of the control moment gyro for controlling the angular velocity .theta. of the gimbal of the control moment gyro so as to absorb an external torque generated in the object to be controlled. The control unit operates in response to the oscillation angular velocity .PHI., which is detected by the angular velocity detector.
Claims10
An oscillation suppression device comprising:
- a support frame having rotary bearings;
- a gimbal having a gimbal shaft and being rotatably supported by said bearings on said support frame;
- a flywheel rotatably supported in said gimbal;
- a motor operably coupled to said flywheel;
- means for supplying a constant voltage to said motor including a current limiter and a battery;
- an angular velocity detector adapted to detect an angular velocity of an object in which oscillation is to be suppressed and emitting a signal corresponding to the detected angular velocity of the object;
- and
- control means provided on said gimbal shaft for controlling the angular velocity of said gimbal in response to the signal from said angular velocity detector.
A ship having an oscillation suppression device, said oscillation suppression device comprising:
- a support frame having rotary bearings;
- a gimbal having a gimbal shaft and being rotatably supported by said bearing on said support frame;
- a flywheel rotatably supported in said gimbal;
- a motor operably coupled to said flywheel;
- a means for supplying a constant voltage to said motor including a current limiter and a battery;
- an angular velocity detector adapted to detect an angular velocity of said ship in which oscillation is to be suppressed and emitting a signal corresponding to the detected angular velocity of said ship;
- and
- control means provided on said gimbal shaft for controlling the angular velocity of said gimbal in response the signal from said angular velocity detector.
Dependencies are inferred from the claim text.